Houston Texans upset Indianapolis Colts, 27–24

The Texans closed as 9-point underdogs and won outright. The betting market gave them a 20% chance.

All 2006 NFL Week 16 upsets, biggest first

An NFL upset is an underdog getting 3.5 or more points on the closing line winning outright. Upset size is the points it overcame. How it’s scored

1. Houston Texans 27, Indianapolis Colts 24

   9-point underdog20% to winRecap
   Upset size9
2. Philadelphia Eagles 23, Dallas Cowboys 7

   6.5-point underdog28% to winRecap
   Upset size6.5
3. Carolina Panthers 10, Atlanta Falcons 3

   6-point underdog31% to winRecap
   Upset size6
4. Tennessee Titans 30, Buffalo Bills 29

   5.5-point underdog31% to winRecap
   Upset size5.5
5. Baltimore Ravens 31, Pittsburgh Steelers 7

   4-point underdog35% to winRecap
   Upset size4
6. Tampa Bay Buccaneers 22, Cleveland Browns 7

   3.5-point underdog36% to winRecap
   Upset size3.5
7. Arizona Cardinals 26, San Francisco 49ers 20

   3.5-point underdog37% to winRecap
   Upset size3.5